Vaastu Shastra lays down
certain basic principles to be followed while positioning the toilet
in the house. Vastu for toilet recommends North-West corner of the
house or building to be assigned to the toilet. For an attached
toilet, again the North-West side of the room is recommended as per Vaastu. The second option could be the South-East direction.

Toilet in the North-East can adversely affect the finances and
prosperity of the family. Whereas toilet in South-West direction
directly affects the head of the family in terms of his health and
might make him highly indecisive.

Some effective Vaastu/ Vastu Tips for architecture of the toilet includes:

Toilet seats should ideally be placed in either
South to North directions or West to East direction

The doors should be either in the North-East or
East walls

Mirrors should be placed on the North or East
walls only

The toilet walls should be painted in lighter
hues and not warning colors like red and black